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-shorten reduces the size of waveform files (such as audio) using
-Huffman coding of prediction residuals and optional additional
-quantisation. In lossless mode the amount of compression obtained
-depends on the nature of the waveform. Those composing of low
-frequencies and low amplitudes give the best compression, which may
-be 2:1 or better. Lossy compression operates by specifying a minimum
-acceptable segmental signal to noise ratio or a maximum bit rate. Lossy
-compression operates by zeroing the lower order bits of the waveform,
-so retaining waveform shape.
+shorten reduces the size of waveform files (such as audio) using Huffman
+coding of prediction residuals and optional additional quantisation. In
+lossless mode the amount of compression obtained depends on the nature
+of the waveform. Those composing of low frequencies and low amplitudes
+give the best compression, which may be 2:1 or better. Lossy compression
+operates by specifying a minimum acceptable segmental signal to noise
+ratio or a maximum bit rate. Lossy compression operates by zeroing the
+lower order bits of the waveform, so retaining waveform shape.